/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
package ecom.servlets.error;

import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
 *
 * @author simon
 */
public class ExceptionDisplay extends HttpServlet {

    /** 
     * Processes requests for both HTTP <code>GET</code> and <code>POST</code> methods.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        response.setContentType("text/html;charset=UTF-8");
        PrintWriter out = response.getWriter();
        
        String code = null, message = null, type = null;
        
        // on recupere les informations de l'erreur
        Object codeObj = request.getAttribute("javax.servlet.error.status_code");
        Object messageObj = request.getAttribute("javax.servlet.error.message");
        Object typeObj = request.getAttribute("javax.servlet.error.exception_type");
        
        // on transtype en string
        if(codeObj != null) code = codeObj.toString();
        if(messageObj != null) message = messageObj.toString();
        if(typeObj != null) type = typeObj.toString();

        request.setAttribute("errorType", type);
        request.setAttribute("errorCode", code);
        request.setAttribute("errorMessage", message);
        request.getRequestDispatcher("/WEB-INF/view/error.jsp").forward(request, response);
    }

    // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
    /** 
     * Handles the HTTP <code>GET</code> method.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /** 
     * Handles the HTTP <code>POST</code> method.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /** 
     * Returns a short description of the servlet.
     * @return a String containing servlet description
     */
    @Override
    public String getServletInfo() {
        return "Short description";
    }// </editor-fold>
}
